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Soil-structure Interaction in Siesmic Analysis | 5.05 KB |
Conflicting
assumptions exist between structural engineers (who assume flexible structures
on rigid block foundations) and geotechnical engineers (who assume flexible
foundations supporting rigid structures). Thus a soil-structure interaction is a
step that removes many of the assumptions and thus clears reality to a greater
extent. However such a model cannot be analytically analyzed. We need to
anatomize and analogize it.
A conceptual
(analogical) 1D model for soil structure interaction is presented and its
results are compared with 3D dynamic soil-structure finite element analysis of
a structural example
The aim is to focus
on how to calculate the period of the structure which is fundamental to
estimate effect of earthquake loads on the structure; and to investigate effect
of variation of stiffness on soil-structure interaction.